vulnerability
Cisco XE: CVE-2021-1621: Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:A/AC:L/Au:N/C:N/I:N/A:P) | Sep 23, 2021 | Jan 18, 2022 | Feb 23, 2024 |
Severity
3
CVSS
(AV:A/AC:L/Au:N/C:N/I:N/A:P)
Published
Sep 23, 2021
Added
Jan 18, 2022
Modified
Feb 23, 2024
Description
A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.
Solution
cisco-xe-upgrade-latest
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